Water-meter.



H. I. DILTS.

WATER METER. APPLICATION 11.21) 1mg. 14. 1909.

Patented Aug. 2, 1910.

Wunn snares earner rui nanny I. name, or LONG ISLAND CITY, new YORK, ASSIGNOR T0 NEPTUNE METER coiaranr, or none rsnann our, NEW "roux, s. CORPORATION or NEW YORK.

warns-Maren.

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Specification of Letters Patent.

Patented Aug. 2, 1910.

Application filed December 14, 1909. Serial No. 533,017.

To all whom it may concern:

rm it known that I, Hnnnv I. 'DILTS, a citizen of the United States of America, and residing in Long IslandCity, in the borough of Queens and State of New York, have invented certain new and useful Improvements in Water-Meters, of which the follow ing is a specification.

he ob ect of my invention is to construct a simple and eflicient liquid-measuring apparatus of that class in which the meter is of the compound type, provided with two metering devices, one adapted for relatively high duty and another for relatively low duty, arranged in two branches with the inflow and outflow common to both, and two valves, one controlling the flow through the high duty meter and the other through the low duty meter and operated by varying pressure difierential to cause the flow to take place only through one or the other of said metering devices. This object I attain by constructing the. two valves fixedly united to move together vertically as hereinafter described.

l The view in the accompanying drawing is a vertlcal section of a compound meter constructed in accordance with my invention.

' register Although it is not essential, I prefer to mount'the two metering devices in one and the same casing, and such a compound meter as illustrated in the drawing. The two mepiston type and adapted for relatively low duty work, that is, to register accurately small flows of liquid. These devices B and D. are provided with, or connected up to, their respective registering mechanisms in dicated at b and d.

There is a common inlet or inflow opening at E for the two meters, and a common outlet or outflow at F. The inlet E opens into a chamber 6, from which the incoming liquid may enter the turbine meter B above and below the turbine wheels to, as usual, and thence pass out from the space between the wheels into a conduit C and into the chamber f leading to the outlet F, provided the valve G at the end of said conduit C is open.

The incoming flow of liquid has access to the low duty meter D, from chamber 6, through a conduit H, and after passing through this meter, it can flow through the conduit it into the outlet chamber f and outlet F, provided the valve J is in the open position shown in the drawing.

My present invention has more especial reference to these valves G and J, in combination with the two metering devices and passages. The two valves are fixedly united, as by being made integral or otherwise, and are constructed to work vertically. The lower valve G is constructed like a check valve with an annular seat g in the horizontal art of the diaphragm between the conduit C and the chamber f leading to the outlet F. On the top of this valve G is mounted a straight vertical stem G forming at its upper end a plunger or plug valve J working in a seating formed in the bored end of the outlet h, with its side outlets 71- When the valve G is closed, these outlets /L are 0 am as shown. The raising of the valve G will cause the plunger J to shut 0d these outlets.

The seating for the plunger J is fixedly united to the removable part of the casing containing the meter D, so that on removing this part from the main body of the casing, the double valve or plunger valve J G will be exposed. Weights W, W, in the form of rings may be readily slipped over the straight stem 'to weight the valve to just the degree required for the proper working of the valve under any given conditions.

The operation of the compound meter will be readily understood from the foregoing description. When the flow of water is small, the difference of ressure between the inlet and outlet is insu 'cient to raise the valve G from itsseat and so long as that condition continues the liquid will flow only through the low duty meter I) and will be registered thereby with accuracy. But when the pressure differential increases sufficiently Lo raise the valve G, the valve J will thereby be closed, and the high duty ,meter B will come into operation alone, andthe large flow will thus be registered correctly by that meter.

By constructing the compound valve as a straight vertically moving valve, as described, its construction is very simple, it is certain in its action and not liable to get out of order, and it lends itself to a simple method of weighting, which latter Will vary 'with varying conditions.

I claim as my invention:

1. The combination of a relatively high duty meter, a relatively low duty meter, a common conduit having branches in which the two meters are respectively located, the inflow and outflow being common to both, and two straight vertically movin valves fixedly united and controlling the ranches respectively, whereby 'when one valve is in position closing onebranch, the other valve is in open position and flow may, take place through the other branch.

2. The combination of a relatively high duty meter, a relatively low duty meter, 2. common conduit having separate branches l n containing the respective meters and an mfiow and an outflow common to both branches, and a vertically moving weighted valve operating to open the low duty branch and to close the high duty branch against flow under pressure lower than a predetermined minimum and to open the same under a higher ressure, and. a straight vertical plug fixe ly united Withrsa'id valve and moved therewith under higher pressure to In testimony whereof I have signedl my name to this specification, in the presenoejof two subscrlbing witnesses.

- HENRX I. DILTS.

Witnesses:

WALTER Anne, HUBERI HowsoN. 

